Lock-nut.



' of manufacture and at the 35.

, Fig.. 3 is a llongitudinal of the male section ;`Fig.

ARTHUR. R'. ENOINAS, 0F SAN FRANCISCO, CALIFORNIA.

LOCK-NUT.

Loeaave.

Specification of Letters Patent.

Patenten naar. aa, mia..

Application filed August 1, 1912. Serial No. 712,813.

To all whom t may concern:

Bent known that I, ARTHUR R. ENciNAs, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented a new and useful Lock-Nut, of which the following is a specification.

This invention relates to new and useful improvements in vnut locks and more .particularly to a sectional nut lock, the object of the invention being to provide a nut having 'means for engagement with the substructure to which the boltis applied to prevent turning movement of the nut and is further provided with means for releasing said engaging means when it is desired to remove the nut from the bolt.

Another object of the invention is the provision of a nut lock including a male and a female section, the male section thereof being provided withv engaging points adapted for engagement with the su -structure to securely hold the nut against turning movement and further including a female section inovably mounted u on the male section and adapted to engage t e substructure when it is desired to remove the nut to release the engaging means carried by the male section and permit turning movement of the nut- Afurther object of the invention is the provision of anut lock of the above character which will possess advantages in points ofeciency land durability, -is 'inexpensive same tlme 1s simple in construction and operation.

With the ralcove and other objects in view, this invention consists in the novel features of construction and the combination and arrangement of arts to be hereinafter more fully describeti pointed out in the claims and shown in the accompanying drawings, in which-'- Figure l is an endelevation of my improved nut lock; Fig. 2 is a side elevation showing the same in its operative position; sectional view of is a similar view 5 is a side elevation illustrating the position of the .female section when it is desired to release the nut.

Referring more particularly to the drawings, 1 indicates the male section of my improved nut lock, which includes a substantially rectangular body member internally threaded, as shown at 2, and provided upon one side thereof with an integrally formed the female section; Fig. 4

- engagement with a bolt which has been sleeve 3 threaded upon its exterior and its interior, as shown at et and 4. It will be readily understood that the interior threads 2 and 4 of the male section 1 are adapted for reviously passed through the sub-structurld to which the nut is to be applied.

In Fig. 3, I have illustrated a longitudinal sectional view of the female section 5 of my improved nut lock. This section .comprises a, rectangular body member or any other suitable form desired, the interior. of which is threaded, as shown at 6, said threads being adapted for engagement with the exterior threads 4 formed upon the sleeve 3 whereby the female section 5 is movably engaged with the male section 1. The end of the sleeve 3 oppositethe body 1 is provided with diametrically opposite tapering engaging points 7, which, when the nut is screwed home upon the bolt, will engage the substructure to which the bolt is applied and prevent backward turning movement of the nut.

Before applying the nut lock to the bolt, the female section 5 is threaded upon the sleeve 3 until the outer faces of the sleeve and the female section are flush, thus permitting the nut to be screwed up nearly tight with said substructure. When it is desired to remove t-he nut, the female section 5 is screwed from the sleeve 3 toward y sub-structure 1 backward,

the sub-structure engaging the and forcing the male section thus disengaging the engaging points 7 from.

the sub-structure sufficiently to permit backward rotary movement of the nut. It will be readily understood that should the nut lock be applied to a steel surface, the engaging point 7 which will be' constructed of tempered steel, willf not permit the nut to be screwed tightly against the sub-structure,

'thus leaving suftici'ent space between. the end of themale section and the sub-structure so thatwhen the female portion is advanced toward the sub-structure, it will have.

greater movement to relieve the engaging points.

-It is a well known fact that after a certain period of use, bolts generally become loosened and expand to a certain extent so that the nut which is threaded thereon is not as tight as it was when screwed home in the first place. It will, therefore, be read ily apparent that when it is desired to re lease the nut from the bolt, the femalev sec tion 5 of my impro'ved nut lock may upon the advancement of the same toward the substructure force the male section 1 back- Ward sufficient to release the engaging points 7. Should the nut lock be'applied to a Wooden surface, it will be readily undervstood that. the points 7 Will engage sufficiently deep in the sub-structure to permit the nut to be screwed tightly againstpihe same. In'releasing the nut from the Wooden sub-structure, it will be readily apparent that in securing the female section 5 against the surface of thewooden sub-structure, it will not only force the nut backward but at the same time will press inwardly upon the wooden sub-structure so that the points 7 may be readily released. It is a Well known fact that most all the different types of Wood contain elasticity to a certain extent, thus permitting the operation, as above described. f

From the foregoing description taken in connection with the accompanying drawings, it Will be readily apparent that I have provided a simple and durable nut lock which may be quickly and readily applied to any form of bolt, and which is provided yyith engaging means adapted for engagement with the substructure to which the bolt is applied to prevent backivard move ment of the nut. It will also be apparent ,that my improved nut is provided with simpleyand durable means for releasing said engaging members when it is desired to remove the nut. The device as herein shown and described is thought to be extremely simple f in construction and can be manufactured at a comparatively low cost.

be resorted to for successfully carrying my invention into practice Without sacri any of the novel features or departing from the scope of the appended claims.

What I claim iszl. A device of the class described including a male section adapted to removably engage the threaded end of the bolt, an internally and externally threaded sleeve formed 'integral with one face of the male section, engaging points formed upon the outer end of said sleeve for engagement with the sub-structure to' prevent backward rotary movement of the nut, and a female section movahly mounted upon said sleeve, as and for the purpose set forth.

2..A- device of the Iclass described including a male section comprising a body adapt- Aed to be remo4 Tably engaged with the threaded end of a bolt, an internally and externally threaded sleeve formed integral With one face ot' the body, diametrically opposite engaging members formed upon the outer end of said sleeve, a female portion ,movably' mounted upon the sleeve and having its outer face normally flush With the outer end of the sleeve and said female section being adapted for advancement against the substructure to which the bolt is applied to release said engaging points.

RTHUR R. ENCINAYS.' Vitnesses:

A. O. FLOWERS, EDW. GONZALES.

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